John W. Campbell was a man who really knew what makes SF the appealing thing it is; it's no wonder that he published the story. Also included in this volume are "The Mercenaries" (Astounding Science Fiction, March, 1950), "He Walked Around the Horses" (Astounding Science Fiction, April 1948), "The Return" (Astounding Science Fiction, January, 1954 -- a collaboration with John J. McGuire), and "Temple Trouble" (Astounding Science Fiction, April, 1951).

Здесь другие издания с похожим названием: 'Time and Time Again and Other Science Fiction by H. Beam Piper, Adventure'

Police Operation:Hunting down the beast, under the best of circumstances, was dangerous. But in this little police operation, the conditions required the use of inadequate means!*Naudsonce:Bishop Berkeley's famous question about the sound of a falling tree may have no standing in Science. But there is a highly interesting question about "sound" that Science needs to consider. . . .

Flight from Tomorrow:There was no stopping General Zarvas' rebellion. Hunted and hated in two worlds, Hradzka dreamed of a monomaniac's glory, stranded in the past with his knowledge of the future. But he didn't know the past quite well enough. . . .

The heroes of this story, Verken Vall and his wife Hadron Dalla, are ready to embark on a long-overdue vacation, when the Paratime Police send them both to investigate rumors of slavery in the Esaron Sector. Like many of Piper's stories, this is a police procedural, set in the world of the future.This short novel by H. Beam Piper was originally published in two parts in Astounding Science Fiction, February and March of 1955 and also appeared in the 1981 collection Paratime.